package com.wolfcode.web.controller.common;

import com.wolfcode.common.config.WolfcodeCarConfig;
import com.wolfcode.common.constant.Constants;
import com.wolfcode.common.core.domain.AjaxResult;
import com.wolfcode.common.utils.StringUtils;
import com.wolfcode.common.utils.file.FileUploadUtils;
import com.wolfcode.common.utils.file.FileUtils;
import com.wolfcode.common.utils.uuid.IdUtils;
import com.wolfcode.framework.config.ServerConfig;
import io.minio.BucketExistsArgs;
import io.minio.MinioClient;
import io.minio.PutObjectArgs;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.util.Assert;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

/**
 * 通用请求处理
 * 
 * @author ruoyi
 */
@RestController
@RequestMapping("/common")
public class CommonController
{
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;

    private static final String FILE_DELIMETER = ",";

    /**
     * 通用下载请求
     * 
     * @param fileName 文件名称
     * @param delete 是否删除
     */
    @GetMapping("/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request)
    {
        try
        {
            if (!FileUtils.checkAllowDownload(fileName))
            {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = WolfcodeCarConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete)
            {
                FileUtils.deleteFile(filePath);
            }
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求（单个）
     */
    @PostMapping("/upload")
    public AjaxResult uploadFile(MultipartFile file) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = WolfcodeCarConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", url);
            ajax.put("fileName", fileName);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 通用上传请求（多个）
     */
    @PostMapping("/uploads")
    public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = WolfcodeCarConfig.getUploadPath();
            List<String> urls = new ArrayList<String>();
            List<String> fileNames = new ArrayList<String>();
            List<String> newFileNames = new ArrayList<String>();
            List<String> originalFilenames = new ArrayList<String>();
            for (MultipartFile file : files)
            {
                // 上传并返回新文件名称
                String fileName = FileUploadUtils.upload(filePath, file);
                String url = serverConfig.getUrl() + fileName;
                urls.add(url);
                fileNames.add(fileName);
                newFileNames.add(FileUtils.getName(fileName));
                originalFilenames.add(file.getOriginalFilename());
            }
            AjaxResult ajax = AjaxResult.success();
            ajax.put("urls", StringUtils.join(urls, FILE_DELIMETER));
            ajax.put("fileNames", StringUtils.join(fileNames, FILE_DELIMETER));
            ajax.put("newFileNames", StringUtils.join(newFileNames, FILE_DELIMETER));
            ajax.put("originalFilenames", StringUtils.join(originalFilenames, FILE_DELIMETER));
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception
    {
        try
        {
            if (!FileUtils.checkAllowDownload(resource))
            {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = WolfcodeCarConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    /**
     * MinIO上传请求
     */
    @PostMapping("/minio/upload")
    @ResponseBody
    public AjaxResult minIoUploadFile(MultipartFile file) throws Exception {
        // 主机地址, 即我们要存放的服务器目标地址
        String endpoint = "http://xue.cnkdl.cn:23900";
        // 账号
        String accessKey = "developer";
        // 密码
        String secretKey = "wolfcode.cn";
        // 存储空间, 即我们要存放的目录
        String bucket = "car";
        // 自己生成唯一的文件名
        String fileName = IdUtils.fastSimpleUUID() + System.currentTimeMillis();
        // 获取文件后缀
        String extension = FileUploadUtils.getExtension(file);
        InputStream inputStream = file.getInputStream();

        if (StringUtils.isNotEmpty(extension)) {
            fileName = fileName.concat(".").concat(extension);
        }

        // 使用步骤：
        // 1：创建minio客户端连接对象
        MinioClient minioClient = MinioClient.builder().endpoint(endpoint).credentials(accessKey, secretKey).build();
        // 2: 检查存储空间是否存在, 存储空间不存在上传不了
        boolean exists = minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucket).build());
        Assert.state(exists,"存储空间不存在!");

        PutObjectArgs objectArgs = PutObjectArgs.builder()
                .bucket(bucket)
                .object(fileName)
                .stream(inputStream, inputStream.available(), -1)
                .build();

        // 3:上传文件
        minioClient.putObject(objectArgs);
        //4：拼接图片访问连接
        String url = endpoint + "/" + bucket + "/" + fileName;

        return AjaxResult.success("上传成功!", url);
    }
}
